CarbonCure has joined forces with HC&D Ready Mix in a bid to reduce emissions from the built environment in Hawaii.
Wade Wakayama, president of HC&D, says: “The ability to locally produce low-carbon concrete will allow us to help the State to meet its ambitious CO2 targets and climate adaptation goals.”
HC&D, a concrete producer on the island of Oahu, has a fleet of more than 50 mixer trucks. It also has facilities for aggregate, sand and ready-mix concrete production on Maui.
CarbonCure says Hawaii has developed a model to lower the embodied emissions of concrete by scaling up carbon dioxide (CO2) utilisation technologies without impacting infrastructure budgets or quality.
According to CarbonCure, the city and county of Honolulu has demonstrated climate leadership by passing a resolution which requests city administration to “consider post-industrial carbon dioxide mineralised concrete for use in all City and County of Honolulu capital improvement projects utilising concrete.” Climate leadership has also been demonstrated at the state level, with the pending legislature that would require “all state building construction that uses concrete to use post-industrial carbon dioxide mineralised concrete.”
Ed Sniffen, Hawaii Department of Transportation (HDoT) deputy director for highways, says: “We’ve seen the benefits to CO2 mineralised concrete and will be using it when appropriate in Hawaii’s road and bridge projects. Having a local supplier like HC&D partnering with CarbonCure to provide these materials is a huge step. The availability of environmentally friendly materials such as carbon injected concrete is necessary for HDoT to move forward in reducing the carbon footprint of our construction projects.”
Additionally, the HDoT partnered with Island Ready Mix, Hawaii Gas and Matheson Gas to conduct its first infrastructure demonstration of CO2 mineralisation for concrete paving on Honolulu’s Kapolei Interchange. The initial pilot saved 1,500 pounds of carbon emissions, CarbonCure concludes.